fixed docstrings according to review comments
fixed docstrings according to review comments

pjbull/cookiecutter,michaeljoseph/cookiecutter,michaeljoseph/cookiecutter,hackebrot/cookiecutter,audreyr/cookiecutter,hackebrot/cookiecutter,audreyr/cookiecutter,luzfcb/cookiecutter,pjbull/cookiecutter,luzfcb/cookiecutter